def idCriteria(r:Tbl1Table, ids:Map[Int, List[(Int, Int)]]):Column[Boolean] = ids.headOption match {
    case None => false
    case Some(e) =>
      val itemIds = e._2.map(_._2)
      val grpId:Int = e._1
      (((r.gid === grpId) && (r.item inSet itemIds)) || idCriteria(r, ids - e._1))
  }

  val correct = query.filter(r => idCriteria(r, idsGrp))
  println(s"select is ${correct.selectStatement}")
  //prints: select is select x2."id", x2."gid", x2."item" from "TBL1" x2
  //        where ((x2."gid" = 205) and (x2."item" in (19))) or
  //              (((x2."gid" = 204) and (x2."item" in (11, 12, 13))) or (0 = 1)